Boring apparatus.



No; B9I,629. Patented l'an. 2|, I902.

- F. HOLBRO0K..

BORING APPARATUS.

(Application filed Dec. 14, 1900.)

(No Model.)

UNITED STATES PATENT OFFICE.

FRANK HOLBROOK, OF LYNN, MASSACHUSETTS, ASSIGNOR TO NEW ENG- LAND FIRESUPPLY COMPANY, A COPARTNERSHIP COMPOSED OF HIM- SELF AND ROBERT E.BUSS, OF LYNN, MASSACHUSETTS;

BORING APPARATUS.

SPECIFICATION forming part of Letters I 'atent No. 691,629, datedJanuary 21, 1962.

Application filed December 14, 1900. Serial No. 39,887. (No model.)

To all whom it may concern.-

Be it known that I, FRANK HOLBROOK, of Lynn, county of Essex, andCommonwealth of Massachusetts, have inventedcertain Improvements inBoring Apparatus, of which the following, read in connection with theaccompanying drawings, is a specification.

The machine herein represented, Figures 1, 2, 3, and 4, and firstdescribed is designed specifically for use as an item in ordinary fireapparatus and is useful for rapidly boring holes through'fioors ofburning buildings where openings are desirable in order to relieve saidfloors from flooding with water.

The accompanying drawings are made on a scale of one-quarter of the fullworking size of said machine.

Fig. 1 is, an elevation of a central longitudinal section. Fig. 2 is asectional plan of the apparatus with handle removed. Fig. 3 is a sideelevation, and Fig. 4 is'a bottom plan, of one of the cutters. Fig. 5 isan elevation of a section, showing a modified form of the apparatus.

As shown, said apparatuscomprises a shaft 2, on which turns the handle3. In this connection is employed ratchet-and-pawl mechanism of ordinaryconstruction which permits free movement of the handle 3 in onedirection, but interlocks it with said shaft 2 when reversely moved, allthis in the usual and well-known manner.

Loose on the shaft 2 and detachably fixed by screws 5 to the part 6 is acollar 4, which, bearing on the head end 7 of said shaft 2, holds saidshaft in bearing with part 6 and allows it to be turned freely. Part 6carries a worm 8, which is held thereto and interlocked therewith byscrew 0. Said part 6 carries an integral or fixed band 10 inscrew-threaded engagement with part 12. The cutters 14 are detachablysecured by pin 16 to the part 12 andare further clamped in position bythe collar 18. To this end said collar 18 has screw-threaded engagementwith part 12 and has a beveled face 20, opposed to the beveled face 22on said cutters.

A sleeve 24, arranged for endwise movement on shaft 2, has the cross-bar26 formed on its bottom end, which is adapted for entering recesses 28inpart 6, whereby said part 6 may be interlocked for movement rotativelywith said shaft 2.

Secured on the part 12 is a cap 30, having central opening and notches32, whereby to allow passage for said cross-bar 26. On the cover 30 alsoare inwardly-projecting ledges 40, on which the cross-bar 26 may berested in bearing with stop projections 46 on. cap 30, whereby tointerlock and cause the part 12 to move rotatively with said shaft 2.

In operating this machine sleeve 24 is first depressed for placingcross-bar 26 in recesses 28 of part 6,whereby said part 6 is interlockedwith shaft 2. Handle 3is then moved for turning part 6, and consequentlyentering the worm 8 into engagement with the work orobject to be cut.This engaging of worm 8 in the work having been completed,.sleeve 24 islifted to an altitude above cap 30, and shaft 2 being turnedsufficiently to permit it said sleeve is rested with cross-bar 26 onledges 40 in bearing with stop projections 46 and directly under straps48, (see Fig. 2,) where it operates for interlocking part 12 and shaft2. Handle 3 may then be operated for turning part 2, and with it part12', whereby cut ters 6 are made to out the work and will be.

simultaneously fed to the work by reason of. the screw-threadedconnections between part 12 and said part 6. Y

In Fig. 5 is represented a modification of this invention wherein acollar 60 is applied to the part 12, which collar has radially-extendingarms 62, with sockets 64, in which are seated the cutters 66. Saidcutters'being clamped in place by nuts 68 admit of being shifted andsecured at different times in the different sockets 64. In this mannerthe cutters may be adjusted for cutting at different distances from thecenter conformably to the diameter of hole it is found desirable to makeA the worm or the cutter independently of one i nection and telescopingone into the other,

another.

2. A boring apparatus comprising a worm, a cutter carried independentlyof the worm, adjust-able means for actuating either the worm or thecutter independently and means for feeding the cutter to or from thework independently of the worth.

3. A machine of the character indicated comprising a worm, a membercarrying the worm, a cutter, a member for carrying the cutter, thislatter member separately movable, a handle and connections forinterlocking it with each of the members at different times.

4. A machine of the character described comprising a member, a wormcarried by the member, and engaging the work, a cutter, a second membercarrying the cutter, the members independently movable of one another,means for feeding the cutter to the work independently of the worm and asingle means operated by the workman for engaging either member tooperate it independently of the other.

5. A machine of the character indicated comprising a work-engagingdevice, a member carrying the device, a cutter, a member carrying thecutter, the latter member operative independently of the first-namedmember, a single means for engaging either of the members and means forfeeding the cutter-carrying member to or from the work.

6. A machine of the character indicated comprising a worm andworm-carrying member, a cutter and a member for carrying the cutter, themembers operative independently of one another, a single means forengaging either member alone and a screw-threaded connection between thetwo members whereby the cutter is fed progressively to the workindependently of the worm which remains stationary.

7. A machine of the character indicated comprising a worm andworm-carrying member to be moved for engaging the work, a cutter andcutter-carrying member to be moved independently of the worm-carryingmember, for cutting the work, a revoluble shaft supported in theworm-carrying member, connections for interlocking the shaft with eitherof the members and means for rotating the shaft.

8. A machine of the character indicated and a single means for engagingand operating either member independently of the other.

1.0. A machine of the character indicated comprising a worm andworm-carrying member, for engaging the work, a cutter andcutter-carrying member for cutting the Work, the cutter member operativeindependently of the worm-carrying member, a single means for actuatingeither member independently of the other and means for varying thecircumference of cut described by the cutter.

11. In a boring apparatus, the combination with two telescopic members,one of which carries a worm and the other of which carries a cutter, onemember being entirely receivable in the other, of an independent screwfor rigidly and removably fastening the worm to the worm-carryingmember, and means for rigidly and removably fastening the cutter to thecuttercarrying member, the members operative independently of each otherand means for feeding the cutter to the work progressively.

12. In a boring apparatus, the combination with two telescopic members,one of which carries a worm and the other of which carries a cutter, ofmeans for rigidly and removably securing the worm to the worm-carryingmember, the cutter having a beveled face, a pin detachably securing thecutter to the cuttercarrying member, and a collar on the cuttercarryingmember having a beveled face which engages the oppositely-beveled faceof the cutter to clamp it rigidly in place.

13. In a boring apparatus, the combination with two members, one membercarrying a cutter and the other member carryinga workengaging device,the cutter and work-engaging device each detach'ably secured to theirrespective members, a shaft revolubly secured to one of the members, asleeve movable endwise 0n the shaft, and means on each member engaged bythe sleeve whereby either member may be operated independently of theother.

it. In a boring apparatus, the combination with two members, one ofwhich carries a cutter and the other of which carries a worm se i curedthereto, of a shaft revolubly secured to the worm-carrying member, asleeve capable of endwise movement on the shaft, means on the membersengaged by the sleeve at diiferent times whereby either member may be01)- erated independently of the other, straps on one of the memberswhereby to removably i secure the sleeve rigidly in place, and a han- 1dle on the shaft, the handle provided with a for actuating the membersindependently of i one another and means whereby to feed the cuttersprogressively to the work.

9. A machine of the character indicated comprising a worm, andworm-carrying member for engaging the work, .t cutter andcutter-carrying member for cutting the work, the members being inscrew-threaded conratchet for continuously or intermittently revolvingthe shaft.

15. In a boring apparatus, the combination \Wlfll two members, actuatedindependently of one another, of a shaft, a head formed on one end ofthe shaft and a recessed collar fitting over the head of the shaft andsecured to one of the members whereby the shaft is removably androtativelyheld to the member.

16. In a boring apparatus, the combination with a worm suitably securedthereto, of a cutter carried independently of the Worm, and

and'contained within the other, one member carrying a worm by which thedevice may be held to the material to be operated upon, the

other member carrying a cutter member, and

a single operating means connected to the machine and adapted to actuateeither member independently of the other.

Signed by me at Lynn, Massachusetts, this 10th day of November, 1900.

FRANK HOLBROOK.

Witnesses:

O. B. TUTTLE, A. M. TUTTLE.

